{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:65D24MCEZT7RCBL5JHG2J3NUUI","short_pith_number":"pith:65D24MCE","canonical_record":{"source":{"id":"1202.4950","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-02-22T16:04:54Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"7d92711e4b14d43d118ab7ba654fc0e9ba3177ee8b03d018d562201e4a41fc09","abstract_canon_sha256":"c86a0d1bd19ab53050a4a422feadf0c8684096cbddc5de466b120002270f144d"},"schema_version":"1.0"},"canonical_sha256":"f747ae3044ccff11057d49cda4edb4a22c531c0aa0885996a1ddb6cb1308a430","source":{"kind":"arxiv","id":"1202.4950","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4950","created_at":"2026-05-18T01:58:20Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4950v1","created_at":"2026-05-18T01:58:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4950","created_at":"2026-05-18T01:58:20Z"},{"alias_kind":"pith_short_12","alias_value":"65D24MCEZT7R","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"65D24MCEZT7RCBL5","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"65D24MCE","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:65D24MCEZT7RCBL5JHG2J3NUUI","target":"record","payload":{"canonical_record":{"source":{"id":"1202.4950","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-02-22T16:04:54Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"7d92711e4b14d43d118ab7ba654fc0e9ba3177ee8b03d018d562201e4a41fc09","abstract_canon_sha256":"c86a0d1bd19ab53050a4a422feadf0c8684096cbddc5de466b120002270f144d"},"schema_version":"1.0"},"canonical_sha256":"f747ae3044ccff11057d49cda4edb4a22c531c0aa0885996a1ddb6cb1308a430","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:20.729450Z","signature_b64":"4uTnK51BMIfX5U9ZbmRItNipDEtgGJ5Ag00fJ2ISziHYcKPmeUwSFbFvhV2grAccjv3MAuhqwtO6HZ66fCQ8CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f747ae3044ccff11057d49cda4edb4a22c531c0aa0885996a1ddb6cb1308a430","last_reissued_at":"2026-05-18T01:58:20.728971Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:20.728971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.4950","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:58:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EIM/OanlmhgamfndDhtrwHaCKgTwtdZauZ1ezaF0lXKLQugFqvynHLCTp4iiLw1efS/TCf9+4JM6gMiJtRfJBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:32:35.044955Z"},"content_sha256":"5f2ec058c27102e4c3df4b21bb468568f6f8eb246a20e7ff9bfb0dd7e4cf8182","schema_version":"1.0","event_id":"sha256:5f2ec058c27102e4c3df4b21bb468568f6f8eb246a20e7ff9bfb0dd7e4cf8182"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:65D24MCEZT7RCBL5JHG2J3NUUI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mgb2 Nonlinear Properties Investigated under Localized High RF Magnetic Field Excitation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.supr-con","authors_text":"Behnood G. Ghamsari, C. G. Zhuang, Steven M. Anlage, Tamin Tai, X. X. Xi","submitted_at":"2012-02-22T16:04:54Z","abstract_excerpt":"In order to increase the accelerating gradient of Superconducting Radio Frequency (SRF) cavities, Magnesium Diboride (MgB2) opens up hope because of its high transition temperature and potential for low surface resistance in the high RF field regime. However, due to the presence of the small superconducting gap in the {\\pi} band, the nonlinear response of MgB2 is potentially quite large compared to a single gap s-wave superconductor (SC) such as Nb. Understanding the mechanisms of nonlinearity coming from the two-band structure of MgB2, as well as extrinsic sources, is an urgent requirement. A"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4950","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:58:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TBjicCwDM8K8HM8Hpdy0EwI4UFbSS3DsP6nWMZpser4xMG2k9OC+UsQlEawlZ9BjAAmBSA0iYZkow+xvMjlmCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:32:35.045633Z"},"content_sha256":"931082b5a9726289634f6a307922279d447bc57e28b48d66bc9a74c62117f156","schema_version":"1.0","event_id":"sha256:931082b5a9726289634f6a307922279d447bc57e28b48d66bc9a74c62117f156"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/65D24MCEZT7RCBL5JHG2J3NUUI/bundle.json","state_url":"https://pith.science/pith/65D24MCEZT7RCBL5JHG2J3NUUI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/65D24MCEZT7RCBL5JHG2J3NUUI/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T00:32:35Z","links":{"resolver":"https://pith.science/pith/65D24MCEZT7RCBL5JHG2J3NUUI","bundle":"https://pith.science/pith/65D24MCEZT7RCBL5JHG2J3NUUI/bundle.json","state":"https://pith.science/pith/65D24MCEZT7RCBL5JHG2J3NUUI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/65D24MCEZT7RCBL5JHG2J3NUUI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:65D24MCEZT7RCBL5JHG2J3NUUI","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c86a0d1bd19ab53050a4a422feadf0c8684096cbddc5de466b120002270f144d","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-02-22T16:04:54Z","title_canon_sha256":"7d92711e4b14d43d118ab7ba654fc0e9ba3177ee8b03d018d562201e4a41fc09"},"schema_version":"1.0","source":{"id":"1202.4950","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4950","created_at":"2026-05-18T01:58:20Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4950v1","created_at":"2026-05-18T01:58:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4950","created_at":"2026-05-18T01:58:20Z"},{"alias_kind":"pith_short_12","alias_value":"65D24MCEZT7R","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"65D24MCEZT7RCBL5","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"65D24MCE","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:931082b5a9726289634f6a307922279d447bc57e28b48d66bc9a74c62117f156","target":"graph","created_at":"2026-05-18T01:58:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"In order to increase the accelerating gradient of Superconducting Radio Frequency (SRF) cavities, Magnesium Diboride (MgB2) opens up hope because of its high transition temperature and potential for low surface resistance in the high RF field regime. However, due to the presence of the small superconducting gap in the {\\pi} band, the nonlinear response of MgB2 is potentially quite large compared to a single gap s-wave superconductor (SC) such as Nb. Understanding the mechanisms of nonlinearity coming from the two-band structure of MgB2, as well as extrinsic sources, is an urgent requirement. A","authors_text":"Behnood G. Ghamsari, C. G. Zhuang, Steven M. Anlage, Tamin Tai, X. X. Xi","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-02-22T16:04:54Z","title":"Mgb2 Nonlinear Properties Investigated under Localized High RF Magnetic Field Excitation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4950","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5f2ec058c27102e4c3df4b21bb468568f6f8eb246a20e7ff9bfb0dd7e4cf8182","target":"record","created_at":"2026-05-18T01:58:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c86a0d1bd19ab53050a4a422feadf0c8684096cbddc5de466b120002270f144d","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-02-22T16:04:54Z","title_canon_sha256":"7d92711e4b14d43d118ab7ba654fc0e9ba3177ee8b03d018d562201e4a41fc09"},"schema_version":"1.0","source":{"id":"1202.4950","kind":"arxiv","version":1}},"canonical_sha256":"f747ae3044ccff11057d49cda4edb4a22c531c0aa0885996a1ddb6cb1308a430","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f747ae3044ccff11057d49cda4edb4a22c531c0aa0885996a1ddb6cb1308a430","first_computed_at":"2026-05-18T01:58:20.728971Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:20.728971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4uTnK51BMIfX5U9ZbmRItNipDEtgGJ5Ag00fJ2ISziHYcKPmeUwSFbFvhV2grAccjv3MAuhqwtO6HZ66fCQ8CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:20.729450Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.4950","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f2ec058c27102e4c3df4b21bb468568f6f8eb246a20e7ff9bfb0dd7e4cf8182","sha256:931082b5a9726289634f6a307922279d447bc57e28b48d66bc9a74c62117f156"],"state_sha256":"3c41e191b986def52cd9984d742cdd3be33de000cb6781662e68b5cad260fefa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xeg4NjUnmp1bjSSK5wtydM0zhxf2ubLNV/+B11GE35XVe2JR865w+YMZKiY8B5eOYps+hABzWDRcD6dq3t7WAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T00:32:35.049095Z","bundle_sha256":"26518699af7c3ef139202c9339a62518b2116ca24c047417eeca339faba17687"}}